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Featured Posts
Our most popular articles and tutorials
A Day in the Life of a DevOps Engineer
Follow a DevOps engineer through a typical day - from morning deployments to midnight hotfixes. Real challenges, real solutions, and real impact on business operations.
How Docker Differs from a Virtual Machine (And Why It Matters)
Containers and virtual machines both isolate environments, but they work in very different ways. This guide explains the key differences and when to use each.
Should .terraform.lock.hcl Be in .gitignore? (The Answer Might Surprise You)
The .terraform.lock.hcl file causes confusion for many Terraform users. Learn why you should commit it to version control and how to handle it properly.
Hands-On DevOps Exercises
Practice real-world DevOps scenarios with step-by-step guidance. Build skills through interactive exercises designed by industry experts.
Master essential Git workflows, branching strategies, and collaboration techniques used in modern development teams.
You'll learn:
- Understand core Git concepts and workflow
- Create and manage branches effectively
- +2 more objectives
Implement production-ready caching patterns with Redis to dramatically improve application performance and scalability.
You'll learn:
- Implement cache-aside and write-through patterns
- Design effective cache invalidation strategies
- +2 more objectives
Master essential Linux performance analysis and optimization techniques to diagnose and resolve system bottlenecks.
You'll learn:
- Identify CPU, memory, and I/O bottlenecks
- Use performance monitoring tools effectively
- +2 more objectives
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Interactive Exercises
60 min
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Completed Labs
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Latest Posts
Stay up to date with the latest DevOps content
Deployment Strategies: Blue-Green, Canary, and Rolling Deployments Explained
Learn how to deploy applications safely using blue-green, canary, and rolling deployment strategies. Understand the theory, trade-offs, and decision-making behind each approach.
Ping Response: Request Timed Out vs Destination Host Unreachable
Understand the difference between ping timeout and destination unreachable errors, what they mean for network troubleshooting, and how to diagnose connectivity issues.
The 5-Minute Kubernetes Cluster Health Check
Learn how to quickly assess your Kubernetes cluster's health with essential commands and catch issues before they become critical problems.
Right-Sizing Kubernetes Resources with VPA and Karpenter
Overprovisioned CPU and memory in Kubernetes increases costs and reduces efficiency. Learn how to use Vertical Pod Autoscaler, Karpenter, and monitoring tools to balance performance and resource usage.
How to Free Up a TCP/IP Port on Linux, macOS, and Windows
Learn how to identify processes using a port and free it up by stopping the service, killing the process, or changing configuration across different operating systems.
The Hidden Costs of Over-Automation in DevOps
Automation speeds things up, but too much of it can hide failures, slow incident response, and add fragile layers you have to maintain.
Latest Guides
Step-by-step tutorials to boost your DevOps skills
Introduction to AWS
Learn AWS fundamentals step by step, from basic concepts to building your first cloud application.
Introduction to Python
A practical guide to Python programming from basics to building real projects
Introduction to Docker
Learn how to use Docker to build, ship, and run applications efficiently through containerization
Introduction to Kubernetes
Learn how to orchestrate containerized applications at scale with Kubernetes
Introduction to Linux
A practical guide to getting started with Linux for beginners and experienced users alike. Learn the basics of the Linux operating system, command line, and system administration skills needed to feel comfortable in a Linux environment.
Introduction to Terraform
Learn how to manage infrastructure as code with Terraform, from basic concepts to production-ready configurations